Electric switch and lamp socket



ug.v 19, 1924.

1,5055228 F. STEHRER ELECTRIC SWITCH AND LAMP SOCKET Filed Aug. 3l. 1921 Z4 i /y 4f i 24 Y #4f/l 9 fn' 1 Z+`4 ,7/

/z /z y III 73 -ZZ/il'l 'ffii S14/uente@ atto: mz 11 Patented Aug. 19, 1924.

UNITED STATES FREDRICH STEHREB., or BALTIMORE, MARYLAND. v

nnnoraro SWITCH AND naivirsocxnr.

Application mea August 31, 1921. serial No. 497,136.

T 0 all whom t may concern.' f n Be 1t known that I, FREDRICH STEHRER,

a citizen of the United States, residing at Baltimore city, State of Maryland, have invented certain new and 'useful Improvements in Electric Switch and Lamp Sockets, of which the following is a specification.

This invention relates to sockets for incandescent lamps, and more particularly a socket having incorporated therewith a switch.

The invention has for its object to provide a device kof the kind stated whichis very simple and cheap in construction, the parts constituting the same being few and arranged so as to be readily assembled.

A further object of the invention is to provide a1 socket by the use of which a considerable saving of electric current will be effected.

The objects stated are attained by means of a novel combination and arrangements of parts to be hereinafter described and claimed, and in order that thesame may be better understood, reference is had to the accompanying drawing wherein- Figure 1 is an elevation showing one side of the socket; Fig. 2 is a similar View, partly in section; Fig. 3 is a vertical section 0n the line 3 3 of Fig. 1, and Fig. 4 is a horizontal section on the line 4 4 of Fig. 1.

Referring specifically to the drawing, 5 denotes a screw shell of conducting material, such as brass7 adapted to be connected to an attachment plug or similar fixture. The upper end of the shell is closed by a plug 6 of non-conducting material carrying the usual central contact 7 for connection with one side of the service circuit. The lower end of the shell is spanned by a spider 8 of conducting material, which is soldered or otherwise united to the shell to provide an electrical connection. The last-mentioned end of the shell 5 is also closed by a disk 9 of insulating material, said. disk being secured by screws 10 passing through the spider 8. The contact 7 is a head or enlargement at the upper end of a conductor rod 10 passing centrally through the plug 6, the shell 5, the cross bar 8 and the disk 9the spider having a perforation 11 large enough to leave the rod out of contact with the same. The rod 10 projects from the disk 9 to pass through a second disk 12 of insulating material, and being formed beneath the llatter with a head or enlargement` 13 which is enygageable by the central contact of the lamp base as usual.

The "disk 12 is spacedy from the disk 9, and it is carried by bracket arms 14 depending fromthe latter,-said bracket arms being secured by the screws 10, and the disk 12 being secured to the bracket arms by screws 15. Y

The disk 12 carries a lamp receiving screw shell 16 in which they contact 13 islocated,

said shell being in axial alinement with the tion and switch consist of the following v parts:

On top of the disk 12 is mounted a pair of contacts 18 which are secured by one of the screws 17, whereby an electrical connection is made between the contacts and the shell 16. vTo one of the bracket arms 14 is fulcrumed intermediate its ends, as shown at 19, a contact lever 20 having onel end arranged to come between the contacts 18. The bracket arm 14 carrying the switch lever 20 is electrically connected to the shell 5, through the screw 10 and the cross bar or spider 8, and hence when said lever engages the contacts 18 there is established an electrical connecti on between the shells and 16.

The pivot 19 of the switch lever 2O carries a. spring 21 which presses on said lever to hold it n circuit-breaking position after it has been swung to that position. The switch lever 2O is operated by the usual pull-chains 22 connected to the ends thereof.

That portion ofthe device which is below the shell 5 is housed in a sleeve n3 having side slots 24 through which the ends of the lever 2O protrude, and the lower end of the shell 16 is fitted with a flared ring 25 of porcelain which is threaded to screw o-ver said shell, and has an external shoulder 26 against which the lower end of the sleeve 23 seats, and whereby said sleeve is retained in place.

I claim:

Aylamp socket comprising a pair of upper and lower spaced screw shells of conducting material, a plug of insulation material closing one end of the upper shell, a contact associated with-.said plug7 avr-centrally;7 apertured spider spanning the' other end-A of. saidv up-r per shell and in electrical contact therewith, a disk of insulation material closing the last named end of said shell, a second disk of insulation material closing the adjacent end of the lower shell and spaced from the first named disk, spacing-brackets arranged between said disks7 fasteners passing through said disksl and connecting the second named disk therewith and the first named-disk with the aforesaid spider7 a switch-contact carried by said second narned disk, other fastenings securing said lower shell-with said last namedlowerdisk, said other'A astening's being: in electrical contact withv said'. switchcontact,l a spring-pressed circuit closing arni pivoted intermediate its ends on one of the aforesaid' spacing-brackets and engageable with said switch-contact, and a rod of conducting material connected with the first named contact onsaid upper shell and pass ing through the aperture in said spider, both 0f said disksl and into the interior of said lower shell.

, In testimony whereof I ailix my signature.

FRIEDRICH STEHRER. 

